Objective To analyze and discuss the clinical effect of sequential radiotherapy and chemotherapy in 40 patients with advanced gastric cancer after operation.Methods 80 postoperative gastric cancer patients who received sequential radiotherapy and chemotherapy in our hospital were prospectively analyzed.According to the order of admission,80 patients were divided into two groups,40 cases of the control group(chemotherapy)and 40 cases of the observation group(sequential chemotherapy).The clinical effects of the two groups were compared.Results In the observation group,1 year survival rate and 2-year survival rate(77.50%,47.50%)were higher than those in the control group(50.00%,25.00%),there were statistically significant differences between the two groups(x2=19.20,32.65,all P<0.05).The incidence rate of adverse reactions of the control group was 12.50%,which was lower than 30.00% of the observation group,there was statistically significant difference between the two groups(x2=9.15,P<0.05).The mortality rate of the observation group was 32.50%,which was lower than 45.00% of the control group,the difference was statistically significant(x2=5.29,P<0.05).Conclusion Compared with the simple chemotherapy after the operation of gastric cancer,sequential radiotherapy and chemotherapy can effectively improve the clinical efficacy,significantly reduce the rate of postoperative metastasis and recurrence of gastric cancer,and it is worthy of promoting.

Objective To study the analysis of non-small cell lung cancer patients with multiple brain metastases with erlotinib combined with whole brain radiation therapy clinical observation and effect of C on vascular endothelial growth factor level. Methods 40 cases of non - small cell lung cancer patients with multiple brain metastases treated in Taizhou tumor hospital from January 2015 to April 2016 were selected and randomly divided into the control group and the experimental group, with 20 patients in each group. The control group and the experimental group patients were given clinical treatment of whole brain radiotherapy, the control group was given routine treatment, the experimental group received erlotinib. The clinical effects of the 2 groups were compared and analyzed. Results After the corresponding treatment, the experimental group of 20 patients, 8 cases of complete remission, 7 cases of partial remission, the number of effective treatment for 15 cases, the treatment rate was 75.0％. Of the patients in the control group, 6patients had complete remission, and 4 patients had partial remission. The effective rate was 50％. Available, the effective rate of the treatment group (75.0％) was significantly higher than that of the control group (50.0％), with statistical difference (P<0.05). The survival rate of the experimental group after one year (80.0％) was significantly higher than that of the control group (60.0％), with statistical difference (P<0.05). The level of vascular endothelial growth factor (C) in the experimental group was significantly lower than that in the control group (P<0.05). Conclusion Non small cell lung cancer patients with multiple brain metastases with erlotinib combined with radiotherapy in the clinical treatment effect of whole brain is better, can improve the survival rate in a large extent, improve the endothelial growth factor C levels, with the further promotion of the clinical significance.

Terpenoids are a group of structurally diverse compounds with good biological activities and versatile functions such as anti-cancer and immunity-enhancing effects, and are widely used in food, healthcare and medical industries. Facilitated by the increasing understandings on the natural biosynthetic pathways of terpenoids in recent years, Saccharomyces cerevisiae has been engineered into high-yield strains for production of a variety of terpenoids, some of which have reached or become close to the level required by industrial production. In this connection, synthetic biology driven biotechnological production of terpenoids has become a promising alternative to chemical synthesis and traditional extraction approaches. This article summarizes the recent process in engineering S. cerevisiae for terpenoids biosynthesis, highlighting the effect of synthetic biology strategies by taking a couple of typical terpenoids as examples.
Biosynthetic Pathways ; Metabolic Engineering ; Saccharomyces cerevisiae/genetics* ; Synthetic Biology ; Terpenes

Objective:To analyze the clinical characteristics of elderly-onset gouty arthritis and risk factors of tophi.Methods:A total of 1 239 gout patients were retrospective selected in the outpatient department of the Gout Clinical Medical Center of the Affiliated Hospital of Qingdao University from 2016 to 2022. According to age of onset, they were divided into the young and middle-aged group(aged<60) consisted of 826 cases, and the elderly group(aged≥60) consisted of 413 cases. Compare the clinical characteristics of elderly with Young and Middle-aged patients.Results:The systolic blood pressure, fasting blood glucose, creatinine, regular exercise, comorbidities, and tophi in the elderly group was higher than that in the middle-aged and young group. The proportion of diastolic blood pressure, serum triglycerides, eGFR, serum uric acid, alcohol consumption rate, and family history of gout was lower than that of young and middle-aged group( P<0.05); In the elderly-onset group, the initial site of arthritis was commonly observed in the first metatarsophalangeal joint. The proportion of the first attack with the upper limb joint was higher in old age group than in young and middle age group( P<0.05). Renal underexcretion type was the main subtype in the elderly group, and the proportion of overproduction type was higher than that of the young and middle-aged group( P<0.05). The logistic regression analysis showed that age, urea nitrogen, disease duration≥10 years and family history of gout were risk factors for tophi in elderly patients( P<0.05). Conclusion:The elderly-onset gout has unique clinical characteristics, characterized by a higher prevalence of tophi, a higher rate of complications. An initial site of arthritis commonly observed in the first metatarsophalangeal joint and the predominant type of uric acid excretion is renal excretion impairment. Early diagnosis and treatment, control of blood uric acid levels, smoking cessation and alcohol, regular exercise should be applied to prevent or delay the formation of tophi.